I am trying to use Async and Await when making a web request and am finding that it never gets past the await line. I am doing this from a Metro app, but I also verified the problem in a winforms app.
public async Task<string> DoSomething()
{
string url = "http://imgur.com/gallery/VcBfl.json";
HttpWebRequest request = HttpWebRequest.CreateHttp(url);
var ws = await request.GetResponseAsync();
return ws.ResponseUri.ToString(); ;
}
If I don't use await and instead perform a synchronous wait, it works, but I need this to run asynchronously.
What am I missing in this code that is causing the await to never return?
I suspect that further up your call stack, you're either calling Wait
or Result
on the returned Task
. This will cause a deadlock, as I describe on my blog.
Follow these best practices to avoid the deadlock:
async
code; use async
all the way down.ConfigureAwait(false)
.